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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1489) [Umbrella] Work-preserving ApplicationMaster restart
Date Wed, 13 Jan 2016 19:53:40 GMT

    [ https://issues.apache.org/jira/browse/YARN-1489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15096879#comment-15096879
] 

Karthik Kambatla commented on YARN-1489:
----------------------------------------

The two unassigned open JIRAs still seem very valid. One of them might be related to YARN-1815.
I am comfortable with converting them to issues and closing the umbrella JIRA.

> [Umbrella] Work-preserving ApplicationMaster restart
> ----------------------------------------------------
>
>                 Key: YARN-1489
>                 URL: https://issues.apache.org/jira/browse/YARN-1489
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Vinod Kumar Vavilapalli
>         Attachments: Work preserving AM restart.pdf
>
>
> Today if AMs go down,
>  - RM kills all the containers of that ApplicationAttempt
>  - New ApplicationAttempt doesn't know where the previous containers are running
>  - Old running containers don't know where the new AM is running.
> We need to fix this to enable work-preserving AM restart. The later two potentially can
be done at the app level, but it is good to have a common solution for all apps where-ever
possible.



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